The Audi RS3 2.5 TFSI 340hp (2011 - 2014) produces 340bhp and 450Nm in standard form. Our Stage 1 ECU tuning file raises output to 400bhp and 600Nm, a gain of 60bhp and 150Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.